Commit message hook that appends story id

commit-msg.sh

#!/bin/sh
#
# An example hook script to check the commit log message.
# Called by "git commit" with one argument, the name of the file
# that has the commit message.  The hook should exit with non-zero
# status after issuing an appropriate message if it wants to stop the
# commit.  The hook is allowed to edit the commit message file.
#
# To enable this hook, rename this file to "commit-msg".

# Uncomment the below to add a Signed-off-by line to the message.
# Doing this in a hook is a bad idea in general, but the prepare-commit-msg
# hook is more suited to it.
#
# SOB=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')
# grep -qs "^$SOB" "$1" || echo "$SOB" >> "$1"

# This example catches duplicate Signed-off-by lines.

#test "" = "$(grep '^Signed-off-by: ' "$1" |
#    sort | uniq -c | sed -e '/^[   ]*1[    ]/d')" || {
#   echo >&2 Duplicate Signed-off-by lines.
#   exit 1
#}

function isNumeric(){ echo "$@" | grep -q -v "[^0-9]"; }

branch=$(git symbolic-ref HEAD | sed -e 's,.*/\(.*\),\1,');
branch_arr=$(echo $branch | tr "@" "\n");
commit=$(eval echo `<$1`);
sid="";
for x in $branch_arr
    do
      sid=$(isNumeric "$x" && echo "$x");
      if [ "$sid" != "" ]
      then
        break;
      fi
done
if [ "$sid" == "" ]
then
  echo "Fix your branch name to your-feature-branch@42234234" && exit 1;
fi
message=\[\#${sid}\]\ ${commit};
echo "$message" > $1;
exit 0;